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'use strict';
// Flags: --expose-gc
const common = require('../../common');
const assert = require('assert');
const theError = new Error('Some error');
// The test module throws an error during Init, but in order for its exports to
// not be lost, it attaches them to the error's "bindings" property. This way,
// we can make sure that exceptions thrown during the module initialization
// phase are propagated through require() into JavaScript.
// https://github.com/nodejs/node/issues/19437
const test_exception = (function() {
let resultingException;
try {
require(`./build/${common.buildType}/test_exception`);
} catch (anException) {
resultingException = anException;
}
assert.strictEqual(resultingException.message, 'Error during Init');
return resultingException.binding;
})();
{
const throwTheError = () => { throw theError; };
// Test that the native side successfully captures the exception
let returnedError = test_exception.returnException(throwTheError);
assert.strictEqual(returnedError, theError);
// Test that the native side passes the exception through
assert.throws(
() => { test_exception.allowException(throwTheError); },
(err) => err === theError,
);
// Test that the exception thrown above was marked as pending
// before it was handled on the JS side
const exception_pending = test_exception.wasPending();
assert.strictEqual(exception_pending, true,
'Exception not pending as expected,' +
` .wasPending() returned ${exception_pending}`);
// Test that the native side does not capture a non-existing exception
returnedError = test_exception.returnException(common.mustCall());
assert.strictEqual(returnedError, undefined,
'Returned error should be undefined when no exception is' +
` thrown, but ${returnedError} was passed`);
}
{
const throwTheError = class { constructor() { throw theError; } };
// Test that the native side successfully captures the exception
let returnedError = test_exception.constructReturnException(throwTheError);
assert.strictEqual(returnedError, theError);
// Test that the native side passes the exception through
assert.throws(
() => { test_exception.constructAllowException(throwTheError); },
(err) => err === theError,
);
// Test that the exception thrown above was marked as pending
// before it was handled on the JS side
const exception_pending = test_exception.wasPending();
assert.strictEqual(exception_pending, true,
'Exception not pending as expected,' +
` .wasPending() returned ${exception_pending}`);
// Test that the native side does not capture a non-existing exception
returnedError = test_exception.constructReturnException(common.mustCall());
assert.strictEqual(returnedError, undefined,
'Returned error should be undefined when no exception is' +
` thrown, but ${returnedError} was passed`);
}
{
// Test that no exception appears that was not thrown by us
let caughtError;
try {
test_exception.allowException(common.mustCall());
} catch (anError) {
caughtError = anError;
}
assert.strictEqual(caughtError, undefined,
'No exception originated on the native side, but' +
` ${caughtError} was passed`);
// Test that the exception state remains clear when no exception is thrown
const exception_pending = test_exception.wasPending();
assert.strictEqual(exception_pending, false,
'Exception state did not remain clear as expected,' +
` .wasPending() returned ${exception_pending}`);
}
{
// Test that no exception appears that was not thrown by us
let caughtError;
try {
test_exception.constructAllowException(common.mustCall());
} catch (anError) {
caughtError = anError;
}
assert.strictEqual(caughtError, undefined,
'No exception originated on the native side, but' +
` ${caughtError} was passed`);
// Test that the exception state remains clear when no exception is thrown
const exception_pending = test_exception.wasPending();
assert.strictEqual(exception_pending, false,
'Exception state did not remain clear as expected,' +
` .wasPending() returned ${exception_pending}`);
}
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